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Which group names three of the six electrolytes most important to body function?
ACopper, zinc and manganese
BIron, chromium and molybdenum
CZinc, iron and copper
DSodium, chloride and phosphate
Answer & Solution
Correct answer: D. Sodium, chloride and phosphate
1. Living systems carry many ions, but only six carry the bulk of the physiological work.
2. Those six are sodium, potassium, chloride, bicarbonate, calcium and phosphate.
3. Sodium, chloride and phosphate all sit inside that group of six.
4. Copper, zinc, iron, manganese, molybdenum and chromium are present but outside the six.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 26 "Fluid, Electrolyte, and Acid-Base Balance", section 26.3 Electrolyte Balance_
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